Bard College

About: Bard College is a education organization based out in Kingston, New York, United States. It is known for research contribution in the topics: Politics & Population. The organization has 898 authors who have published 1573 publications receiving 45039 citations. The organization is also known as: St. Stephen's College.

Estimating the reproducibility of psychological science

Abstract: Reproducibility is a defining feature of science, but the extent to which it characterizes current research is unknown. We conducted replications of 100 experimental and correlational studies published in three psychology journals using high-powered designs and original materials when available. Replication effects were half the magnitude of original effects, representing a substantial decline. Ninety-seven percent of original studies had statistically significant results. Thirty-six percent of replications had statistically significant results; 47% of original effect sizes were in the 95% confidence interval of the replication effect size; 39% of effects were subjectively rated to have replicated the original result; and if no bias in original results is assumed, combining original and replication results left 68% with statistically significant effects. Correlational tests suggest that replication success was better predicted by the strength of original evidence than by characteristics of the original and replication teams.

Stabilizing an Unstable Economy

Abstract: "Mr. Minsky long argued markets were crisis prone. His 'moment' has arrived." -The Wall Street Journal In his seminal work, Minsky presents his groundbreaking financial theory of investment, one that is startlingly relevant today. He explains why the American economy has experienced periods of debilitating inflation, rising unemployment, and marked slowdowns-and why the economy is now undergoing a credit crisis that he foresaw. Stabilizing an Unstable Economy covers: The natural inclination of complex, capitalist economies toward instability Booms and busts as unavoidable results of high-risk lending practices "Speculative finance" and its effect on investment and asset prices Government's role in bolstering consumption during times of high unemployment The need to increase Federal Reserve oversight of banks Henry Kaufman, president, Henry Kaufman & Company, Inc., places Minsky's prescient ideas in the context of today's financial markets and institutions in a fascinating new preface. Two of Minsky's colleagues, Dimitri B. Papadimitriou, Ph.D. and president, The Levy Economics Institute of Bard College, and L. Randall Wray, Ph.D. and a senior scholar at the Institute, also weigh in on Minsky's present relevance in today's economic scene in a new introduction. A surge of interest in and respect for Hyman Minsky's ideas pervades Wall Street, as top economic thinkers and financial writers have started using the phrase "Minsky moment" to describe America's turbulent economy. There has never been a more appropriate time to read this classic of economic theory.

Impacts of biodiversity on the emergence and transmission of infectious diseases

Abstract: Current unprecedented declines in biodiversity reduce the ability of ecological communities to provide many fundamental ecosystem services. Here we evaluate evidence that reduced biodiversity affects the transmission of infectious diseases of humans, other animals and plants. In principle, loss of biodiversity could either increase or decrease disease transmission. However, mounting evidence indicates that biodiversity loss frequently increases disease transmission. In contrast, areas of naturally high biodiversity may serve as a source pool for new pathogens. Overall, despite many remaining questions, current evidence indicates that preserving intact ecosystems and their endemic biodiversity should generally reduce the prevalence of infectious diseases.

Lakes as sentinels of climate change

Abstract: While there is a general sense that lakes can act as sentinels of climate change, their efficacy has not been thoroughly analyzed. We identified the key response variables within a lake that act as indicators of the effects of climate change on both the lake and the catchment. These variables reflect a wide range of physical, chemical, and biological responses to climate. However, the efficacy of the different indicators is affected by regional response to climate change, characteristics of the catchment, and lake mixing regimes. Thus, particular indicators or combinations of indicators are more effective for different lake types and geographic regions. The extraction of climate signals can be further complicated by the influence of other environmental changes, such as eutrophication or acidification, and the equivalent reverse phenomena, in addition to other land-use influences. In many cases, however, confounding factors can be addressed through analytical tools such as detrending or filtering. Lakes are effective sentinels for climate change because they are sensitive to climate, respond rapidly to change, and integrate information about changes in the catchment.

Effects of species diversity on disease risk.

Abstract: The transmission of infectious diseases is an inherently ecological process involving interactions among at least two, and often many, species. Not surprisingly, then, the species diversity of ecological communities can potentially affect the prevalence of infectious diseases. Although a number of studies have now identified effects of diversity on disease prevalence, the mechanisms underlying these effects remain unclear in many cases. Starting with simple epidemiological models, we describe a suite of mechanisms through which diversity could increase or decrease disease risk, and illustrate the potential applicability of these mechanisms for both vector-borne and non-vector-borne diseases, and for both specialist and generalist pathogens. We review examples of how these mechanisms may operate in specific disease systems. Because the effects of diversity on multi-host disease systems have been the subject of much recent research and controversy, we describe several recent efforts to delineate under what general conditions host diversity should increase or decrease disease prevalence, and illustrate these with examples. Both models and literature reviews suggest that high host diversity is more likely to decrease than increase disease risk. Reduced disease risk with increasing host diversity is especially likely when pathogen transmission is frequency-dependent, and when pathogen transmission is greater within species than between species, particularly when the most competent hosts are also relatively abundant and widespread. We conclude by identifying focal areas for future research, including (1) describing patterns of change in disease risk with changing diversity; (2) identifying the mechanisms responsible for observed changes in risk; (3) clarifying additional mechanisms in a wider range of epidemiological models; and (4) experimentally manipulating disease systems to assess the impact of proposed mechanisms.